March 2025 - Cin - Cinelerra-GG Mailing Lists

FranceBB's LUT collection
by Andrew Randrianasulu 16 May '25

16 May '25

forum https://forum.doom9.org/showthread.php?t=176091 it says those LUTs should be usable for ffmpeg's lut3d and therefore for CinGG? github (each *.cube can be several mb's big) https://github.com/FranceBB/LinearTransformation author says they were verified on professional equipment... list includes PAL and NTSC variants for rec. 601....

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I tried to add AVC-Intra 100 output profiles
by Andrew Randrianasulu 08 May '25

08 May '25

But not sure if I did this correctly. https://en.wikipedia.org/wiki/AVC-Intra says for AVC-Intra 100: AVC-Intra 100: nominally 100 Mbit/s, size of each frame is fixed CAVLC entropy coding only. All formats are High 4:2:2 Intra Profile, Level 4.1 4:2:2 chrominance sampling frames are not scaled and yeah, this French-language pdf actually says the same: https://web.archive.org/web/20110720215759/http://www.ficam.fr/upload/docum… 50M 100M Standard MPEG-4 part10 AVC/H.264 Profile High 10 Intra High 4:2:2 Intra Level Level 3.2/4.0 Level 4.1 Resolution 1440x1080 / 960x720 1920x1080 / 1280x720 Sampling 4:2:0 4:2:2 Bit rate 54Mbps 111Mbps Block size Y: 8x8, C: 4x4 Intra Prediction Y: 9mode, C: 4mode MBAFF Yes De-block filter No Slice/frame 10 Entropy coding CABAC CAVLC so, I looked up ffmpeg cmd line https://trac.ffmpeg.org/ticket/3597 ffmpeg -v info -i /mnt-data/backup4/vol0/export/CUHK\ 2014-1/V017b.mov -vcodec libx264 -intra -pix_fmt yuv422p10le -vb 100M -x264opts avcintra-class=100 -x264opts colorprim=bt709 -x264opts transfer=bt709 -x264opts colormatrix=bt709 -threads 4 -acodec copy V017b-ffmpeg-git-avcintra100.mov Huh, said I and entered those params in opts file, actually in two files (mp4 and mov containers) mov libx264 cin_pix_fmt=yuv422p10le flags -global_header keyint_min=0 x264-params=keyint=0:colorprim=bt709:transfer=bt709:colormatrix=bt709 avcintra-class=100 bufsize=100000000 level=4.1 mp4 libx264 cin_pix_fmt=yuv422p10le flags -global_header keyint_min=0 x264-params=keyint=0:colorprim=bt709:transfer=bt709:colormatrix=bt709 avcintra-class=100 bufsize=100000000 level=4.1 both for progressive content, for interlace you must add some more flags: https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-January/035049.html -flags +ildct+ilme -x264opts interlaced=1 Also, there is still lack of (GUI) user notification if file writing failed due to NO SPACE on device :} FFStream::write_packet: write packet failed. file:/dev/shm/avci_new.mp4 err: На устройстве не осталось свободного места FFStream::encode_frame: encode failed. file: /dev/shm/avci_new.mp4 err: На устройстве не осталось свободного места FFStream::flush failed :file:/dev/shm/avci_new.mp4 err: Операция не позволена Render::render_single: Session finished. ** rendered 273 frames in 85.585 secs, 3.190 fps Render::render_single: Session finished. ** rendered 273 frames in 85.485 secs, 3.194 fps Render::render_single: Session finished. ** rendered 273 frames in 82.176 secs, 3.322 fps Profile sort of assumes you set project to some supported resolution, framerate, etc, otherwise libx264 will fail with console error message..... I found some talk about AVC-Ultra, there even was patch for x264, but it was not merged: https://mailman.videolan.org/pipermail/x264-devel/2015-September/011412.html Also, I think sound must be uncompressed, but I'm not sure.

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10bit VAAPI encoding test thread
by Andrew Randrianasulu 06 May '25

06 May '25

We branching! I looked at gpu-screen-recorder https://git.dec05eba.com/gpu-screen-recorder/tree/src/encoder/video/vaapi.c it sets AVHWFramesContext *hw_frame_context = (AVHWFramesContext*)frame_context->data; hw_frame_context->width = video_codec_context->width; hw_frame_context->height = video_codec_context->height; hw_frame_context->sw_format = self->params.color_depth == GSR_COLOR_DEPTH_10_BITS ? AV_PIX_FMT_P010LE : AV_PIX_FMT_NV12; hw_frame_context->format = video_codec_context->pix_fmt; hw_frame_context->device_ctx = (AVHWDeviceContext*)self->device_ctx->data; so may be we need to set AV_PIX_FMT_P010LE and not just P010?

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Update on Blend Algebra / Blend Program plugins
by Phyllis Smith 11 Apr '25

11 Apr '25

*SGE* "no user impact" patch applied in GIT source checkin for increased robustness which you can see if you want at: https://www.cinelerra-gg.org/bugtracker/view.php?id=670 For those who take advantage of *Andrey*'s package releases for automatic updates, they are building and are at: https://github.com/einhander/cin-gg-packages/releases Also, checked into GIT Manual a few minor changes to the wording, punctuation, and removing commentary that I found interesting but would not help the user in usage (for example, "there is proof that any program has infinite number of undetected bugs"!!). Modified the Developer's section to put these plugins' workflow here so that developers can follow this methodology to in the future to add additional effects, because as was stated "one can more quickly test different combinations without spending time to restart Cinelerra, recompile it, reload project, and reattach plugins, etc.". Section is "*Unique Blend plugins workflow*". After I do some more checking, I will at least update the PDF document on the website. *Andrea *had provided some latex fixes for other plugin figures that were out of whack that I checked in too. And if he has time, could he check that I got them right? I spotted another figure that needed fixing but I can not remember where it was. *IgorBeg* - curiosity question -- does the white line on the bottom of the Blend Algebra icon represent the fact that it combines its tracks? or does it represent the fact that there are multiple tracks? or something else?

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Some tests on blending
by Andrea paz 07 Apr '25

07 Apr '25

In reference to the email: https://www.mail-archive.com/[email protected]/msg04905.html and to the whole of the following discussion, which includes a workaround by IgorBeg. I have tried further testing, now that we have Blend Algebra that allows us to customize the various Blends. I do not know whether it is appropriate to reopen an issue that is now closed and has also led to tensions (you can see the article: https://linuxvideoediting.blogspot.com/2022/09/transparent-text-effect-with…. I warn that it contains polemics). So I will only report the result of some of my tests; they are probably not even worth reading.

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New March 31 AppImages
by Phyllis Smith 31 Mar '25

31 Mar '25

So that the Blend Algebra and Blend Program icons would be visible, I updated the AppImages. A few fixes are in too as noted (hopefully technically correct) in the Release Notes shown last here. Plus, I did put Andrea's experimental/testing of Gimp-like overlay algorithms for Addition, Subtraction, Divide, and Multiply using the Blend Algebra plugin at: https:/ cinelerra-gg.org/download/testing/BlendPluginExamples/gimp_.zip . Removed GIT manual reference to Overlays but a little late. *GIT for Cinelerra-GG has the following changes from 03/01/2025-03/31/2025* *Blend Algebra and Blend Program* modifications include the following: - Icons for Cinfinity and Cinfinity2 have been created by *IgorB*. - Code changes by the author, *Georgy*, to both plugins: 1) Buttons =>project, userlib, syslib will also display the target dir when the function name is blank. 2) Refresh will now immediately recompile that function (if any) which is under the timeline cursor when source is newer than shared object. This does not affect the other functions which are not under the cursor and they will still be recompiled on first access. 3) Added “output track” of Blend Algebra which was missing in copy/interpolate functions. 4) Improved robustness of code to prevent race conditions between threads of different windows when closing or resizing dialog menus. *Screencapture* for NetBSD failure has been fixed by adding fallback in case shm capture does not work by *Andrew-R*. This fix may be applicable to other Operating Systems.

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Gimp's blend Vs CinGG's blend
by Andrea paz 27 Mar '25

27 Mar '25

I wanted to try using Blend Algebra to recreate Gimp's blend types inside CinGG. I couldn't because I don't really understand the formulas used by Gimp, or rather, what I understand less are the formulas used by CinGG. I understand that these are pre-multiplied while Gimp's are normal (“straight”). But even without taking this into account, I don't really understand how to compare the formulas (https://docs.gimp.org/3.0/en/gimp-concepts-layer-modes-legacy.html) For example, for the “Multiply” blend we have two different formulas, even though the manual says that the CinGG formula is the same as the Gimp formula: Gimp E = 1/255*(M*I) where “M” (foreground), if I understand correctly, corresponds to our “D” and “I” (background) corresponds to our “S” so it could be written: E = 1/255*(D*S) Instead, CinGG's formula is: [(Sa+Da-Sa*Da), Sc*(1-Da)+Dc*(1-Sa)+Sc*Dc] I cannot compare the two formulas, there is one too many Sc*(1-Da) and one too many Dc*(1-Sa), and a 1/255 is missing. Note: The presence of the parentheses like (1-Sa) is what makes me suspect that CinGG's formulas are “pre-multiplied” (https://en.wikipedia.org/wiki/Alpha_compositing#Straight_versus_premultipli….) There are three types of blends whose formulas differ (and which I wanted to implement via Blend Algebra): (Normal); Addition; Subtract and Divide. Then there are Gimp blends that CinGG doesn't have, but they don't seem interesting to me. PS: I tried to look for the formulas used by CinCV but I don't know where to find them; do they exist anywhere?

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Attempt at fixing screencapture under NetBSD
by Andrew Randrianasulu 21 Mar '25

21 Mar '25

Tried to record desktop, found out screencapture does not work :( It seems even ffmpeg fall back to non-shm capture (slower) under NetBSD, so I tried to to change logic in guicast/bccapture.C so if compiled on netBSD it hard disable shm for capture (playback is fine) Please try on Linux and other systems ... Pay attention to screencapture slowdowns!

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First screencapture under NetBSD!
by Andrew Randrianasulu 17 Mar '25

17 Mar '25

https://cloud.mail.ru/public/DQkK/kpDhJiyY3 9 Mbytes Testing experimental audio support fro qemu-system-ppc (running NetBSD/macppc) under NetBSD/amd64 and of course cinlerra-gg! (with my screencapture fixes) Sadly aiomixer a bit hard to get right on first try, so sound level is LOW. Captured using OSS support via /dev/audio1

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Strange effects with zooming
by Stefan de Konink 14 Mar '25

14 Mar '25

With the recent git version. Did anyone observe strange artifacts on the wave forms when zooming and scrolling too? Like the offset of the wave form moves up or down? -- Stefan

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